{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x44fb458c360c7a66075ffffdbdbcab0b61ba0403aafce4c361436dc910a6d785",
    "signature": "0x6a8f8ef34fd5b89c2f383e3cc7e48d41121b1406e21de73fc6ba7335c2cc69023c7eeb0e280a1217f1ad8eb199a14235f856bfb6de94a582f9215cb553781cec1b",
    "signer": "0xc8b59C26109BC380ABC47eBad3DF1FB7d6aBf13C",
    "userId": "37821039"
  }
}